/*
 *
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.metron.statistics.sampling;

import java.util.function.Supplier;

public interface Sampler extends Supplier<Iterable<Object>> {
  int DEFAULT_SIZE=1024;
  int getSize();
  void add(Object o);

  default void addAll(Iterable<? extends Object> vals) {
    if(vals == null) {
      return;
    }
    for(Object o : vals) {
      add(o);
    }
  }

  Sampler cloneEmpty();


}
